package it.jx.wormholes.physics;
public abstract class ExternalForce implements TimeVariable {

	/**
	 * Calculates the amount of this force on a mass.
	 * 
	 * @param m
	 *            The mass on which the force is calculated
	 * @return The calculated amount of force
	 */
	public abstract Point3D value(Mass m);
}
